CloudBees Jenkins Multiple Vulnerabilities-02-May16 (Linux)

Published: 2016-05-20 10:38:55
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C

Summary:
This host is installed with CloudBees Jenkins and is prone to multiple vulnerabilities.

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
Multiple flaws are due to, - The verification of user-provided API tokens with the expected value did not use a constant-time comparison algorithm, potentially allowing attackers to use statistical methods to determine valid API tokens using brute-force methods. - The verification of user-provided CSRF crumbs with the expected value did not use a constant-time comparison algorithm, potentially allowing attackers to use statistical methods to determine valid CSRF crumbs using brute-force methods. - The Jenkins has several API endpoints that allow low-privilege users to POST XML files that then get deserialized by Jenkins. Maliciously crafted XML files sent to these API endpoints could result in arbitrary code execution. - An HTTP response splitting vulnerability in the CLI command documentation allowed attackers to craft Jenkins URLs that serve malicious content. - The Jenkins remoting module allowed unauthenticated remote attackers to open a JRMP listener on the server hosting the Jenkins master process, which allowed arbitrary code execution.

Impact:
Successful exploitation will allow remote attackers to obtain sensitive information, bypass the protection mechanism, gain elevated privileges, bypass intended access restrictions and execute arbitrary code.

Affected Versions:
CloudBees Jenkins LTS before 1.642.2 on Linux

Recommendations:
Upgrade to CloudBees Jenkins LTS 1.642.2 or later.

Solution Type:
Vendor Patch

Detection Type:
Remote Banner Unreliable

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2016-0788
https://nvd.nist.gov/vuln/detail/CVE-2016-0789
https://nvd.nist.gov/vuln/detail/CVE-2016-0790
https://nvd.nist.gov/vuln/detail/CVE-2016-0791
https://nvd.nist.gov/vuln/detail/CVE-2016-0792

References:

https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2016-02-24
https://www.contrastsecurity.com/security-influencers/serialization-must-die-act-2-xstream
https://www.cloudbees.com

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Severity
High
CVSS Score
10.0

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